linux-kernel - 3.8-rc1 patch_cirrus 4.0 regression...

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Message-ID: <CAMVG2suCiLak3CbeKZtEgjeJqw3=1fD3k9FMsm=tYE7h3cuVjQ@mail.gmail.com>
Date:	Wed, 6 Feb 2013 00:10:30 +0800
From:	Daniel J Blueman <daniel@...ra.org>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org
Subject: 3.8-rc1 patch_cirrus 4.0 regression...

Hi Takashi,

The v3.8-rc kernels have regressed from v3.7 with the quad-speaker
arrangement on my Macbook Pro 10,1 - only the higher-frequency
speakers work despite the front and rear channels being exposed in the
mixer.

Reverting f37bc7 [1] restored the correct behaviour ([2] was reverted
to compile, but the problem still occurs with only [2] reverted).

How can I help to debug this and find the right approach?

Thanks,
  Daniel

--- [1]

commit f37bc7a88d374448a1f4bba9267d308606d78bf2
Author: Takashi Iwai <tiwai@...e.de>
Date:   Thu Nov 8 15:59:23 2012 +0100

    ALSA: hda - Give standard "Bass Speaker" mixer for 2.1 speakers

    When two built-in speakers are found on the machine, we can suppose
    it's rather a 2.1 speaker system with a bass output instead of
    front/surround channels.

    Signed-off-by: Takashi Iwai <tiwai@...e.de>

--- [2]

commit ee81abb623cb5e03c182d16871bb4fb34fdc9b4f
Author: Takashi Iwai <tiwai@...e.de>
Date:   Thu Nov 8 17:12:10 2012 +0100

    ALSA: hda - Apply a proper chmap for built-in 2.1 speakers

    When 2.1 speakers are detected, use the corresponding channel map
    instead of the standard map with front+rear surrounds.

    Signed-off-by: Takashi Iwai <tiwai@...e.de>
-- 
Daniel J Blueman
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